EbikeAus wrote: ↑
Apr 26, 2018 4:19 am
I have around 200km on my 30Q pack now.
Thought I'd record some voltages before and after charging.
It has performed better than expected so far and not bad for cells destined for landfill
I may try a few full charges to see if the bms brings the 2 weaker groups closer.
Super happy with the 30Q pack overall. Does exactly what I need in terms of distance and power. Obviously more of both are welcome
The two lower cell groups (7 & 9) are the only thing that could be improved but is it worth it?
This pack cost me about $70 to build so not complaining! Also these are of course recycled cells, so shouldn't expect perfect balance anyway.
I have considered replacing some or all of the cells in the 2 lower groups as they probably have higher resistance or more use than the rest.
The only tool I have for checking cells resistance is the imax b6 and not sure how accurate that will be?
I'm interested to hear your thoughts. Would you guys bother, or just work at getting next packs better?